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Northwest Africa 11888 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11888 This is an OFFICIAL meteorite name. Abbreviation: NWA 11888 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: 307 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 520 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 3 Aug 2018 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11888 (NWA 11888) (Northwest Africa) Purchased: 2018 Classification: HED achondrite (Diogenite) Physical characteristics: Dark stone. Cut surface reveals a dark gray interior with a variety of clasts up to cm. Petrography: (J. Gattacceca, CEREGE) Brecciated igneous rock with fractured lithic and mineral clasts set in a clastic matrix. The dominant mineral is pyroxene (to 500 um) and plagioclase (to 400 μm). Other minerals: troilite, chromite, silica polymorph, FeNi metal. Geochemistry: Low-Ca pyroxene shows a wide range of composition from Fs12.9 to Fs47.4, and average Fa26.6±10.0Wo2.8±1.7, FeO/MnO=30.0±1.8 (n=15). Augite exsolution Fs25.2Wo39.2 (n=1). Plagioclase An86.6Ab12.9Or0.5 (N=2) Classification: Diogenite Specimens: 30.9 g and a polished section at CEREGE. Main mass with R. Lenssen. | ||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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